Home / 638,480,244.78-881,102,348.10-345,124,812.78

Finding the Fourth Proportional to 638,480,244.78, 881,102,348.10 and 345,124,812.78

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Solution

The fourth proportional to 638,480,244.78, 881,102,348.10 and 345,124,812.78 is: 476,272,030.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,480,244.78 : 881,102,348.10 = 345,124,812.78 : x
  2. Step 2: Convert to fraction form
    638,480,244.78/881,102,348.10 = 345,124,812.78/x
  3. Step 3: Cross multiply
    638,480,244.78x = 881,102,348.10 × 345,124,812.78
  4. Step 4: Simplify right side
    638,480,244.78x = 304,090,282,928,030,848
  5. Step 5: Solve for x
    x = 304,090,282,928,030,848/638,480,244.78
  6. Step 6: Final answer
    x = 476,272,030.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.